Minimum fluence for laser blow‐off of thin gold films at 248 and 532 nm
作者:
Robert J. Baseman,
Nan M. Froberg,
Joseph C. Andreshak,
Zack Schlesinger,
期刊:
Applied Physics Letters
(AIP Available online 1990)
卷期:
Volume 56,
issue 15
页码: 1412-1414
ISSN:0003-6951
年代: 1990
DOI:10.1063/1.102484
出版商: AIP
数据来源: AIP
摘要:
The minimum 248 nm, 25 ns, and 532 nm, 15 ns laser fluences required to blow off thin gold films from optical quartz have been measured as a function of film thickness. The films apparently blow off when the gold‐quartz interface reaches the normal boiling point of gold. Even though the initial reflectivities at the two wavelengths are very different, the actual laser fluences required to blow off the films are very similar. While the reflectivities above the melting point appear to be very low, as expected, large decreases in the reflectivity at 532 nm may also occur prior to film melting.
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